Cancer Home > Drug Interactions With Bevacizumab

Bevacizumab (Avastin®) is a medication approved to treat certain types of cancer. It is also commonly used in an "off-label" fashion to treat macular degeneration.
In late 2010, the United States Food and Drug Administration (FDA) recommended that bevacizumab's breast cancer approval be removed. Studies have not shown the drug to increase survival in people with breast cancer, and there is not sufficient benefit to outweigh the risks.
This action does not affect bevacizumab's approval for other uses. Healthcare providers may still use bevacizumab to treat breast cancer, although they will be doing so in an "off-label" fashion.
At this time, there are no known drug interactions with bevacizumab. However, because specific studies to check for drug interactions have not been performed, it is possible that interactions exist that are not currently known.
One study suggested that bevacizumab may affect how the body handles irinotecan (Camptosar®), a chemotherapy medication, possibly increasing the risk of irinotecan side effects. However, it is not certain that bevacizumab caused these changes or if they were random.
Because it is possible that not all bevacizumab drug interactions are known at this time, you should talk with your pharmacist or healthcare provider on a regular basis about any specific drug interactions that may apply to you.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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